Docking station protection device and docking station

Abstract

The utility model provides a docking station protection device and a docking station, and the docking station protection device is used for carrying out short-circuit protection on the docking station and comprises a protocol chip and a power supply circuit. The protocol chip is in communication connection with external power supply equipment which is connected with the docking station through a power supply circuit; the power supply circuit comprises a detection circuit and a switching circuit, and the protocol chip is connected with the detection circuit and the switching circuit and used for detecting power supply input of power supply equipment through the detection circuit and controlling on-off of the power supply circuit by controlling on-off of the switching circuit. The docking station protection device can detect the power supply input of the power supply equipment so as to judge whether the docking station is short-circuited or not, and when the docking station is short-circuited, the switching circuit can be timely controlled to be disconnected, so that the power supply equipment is disconnected from the docking station, and the docking station is prevented from continuously working in a short-circuit state; and short-circuit protection of the docking station is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of docking station short circuit protection, specifically relates to a docking station protection device and docking station. BACKGROUND

[0002] Docking station is a kind of equipment for providing additional interface.With the rapid development of new energy vehicles, many docking station equipment for new energy vehicle charging expansion appears in the market today, which connects the power supply socket of vehicle, and then divides multiple interfaces to charge for the owner, providing great convenience for the owner's electricity.

[0003] At present, the power supply socket of most new energy vehicles is arranged on the center console, so that the docking station is connected with the power supply socket near the water cup of the center console, which causes liquid to be often splashed into the inside of the docking station during vehicle driving, resulting in the short circuit phenomenon of docking station.The existing docking station lacks structure design in short circuit protection, and still maintains the working state of power supply after short circuit occurs, which will cause the docking station to be burned out for a long time, and even the vehicle may be burned out. UTILITY MODEL CONTENT

[0004] In order to overcome the defects of the prior art, the utility model provides a docking station protection device and docking station, wherein the docking station protection device serves as a bridge for electric energy transmission between the docking station and external power supply equipment, can detect the power supply input of power supply equipment, can control the switch circuit to be disconnected in time when short circuit of docking station is found through detection, so as to disconnect the power supply circuit, realize short circuit protection of docking station, and ensure the use safety of docking station.The specific technical scheme is as follows:

[0005] The utility model discloses a first aspect, provide a kind of docking station protection device, for carrying out short circuit protection to docking station, comprising: protocol chip and power supply circuit;

[0006] The protocol chip is connected with the power supply equipment outside communication, and the power supply equipment is connected with the docking station by the power supply circuit.

[0007] The power supply circuit includes the detection circuit and the switch circuit, and the protocol chip is connected with the detection circuit and the switch circuit respectively, for detecting the power supply input of the power supply equipment by the detection circuit, and for controlling the on-off of the power supply circuit by controlling the on-off of the switch circuit.

[0008] In one embodiment, the protocol chip is also connected with the circuit chip of the docking station.

[0009] When the docking station is short-circuited, the circuit chip cannot work normally, the communication signal between the circuit chip and the protocol chip is lost or abnormal, and the communication is interrupted.

[0010] In one embodiment, the detection circuit is provided with a detection resistor, and the protocol chip is connected to the detection resistor to detect the current of the power supply input of the power supply device.

[0011] In one embodiment, the switch circuit is provided with at least one switch, and the protocol chip is connected to the switch to control the on-off of the switch.

[0012] In one embodiment, the switch includes a first MOS tube and a second MOS tube connected in series, and the protocol chip is connected to the first MOS tube and the second MOS tube respectively to control the on-off of the first MOS tube and the second MOS tube.

[0013] In one embodiment, the power supply circuit is further provided with an external interface, and the power supply circuit is electrically connected to the power supply device through the external interface.

[0014] In one embodiment, the protocol chip is connected to the power supply device through the external interface.

[0015] In one embodiment, the docking station further comprises a prompt module for prompting the state of the docking station, and the prompt module is connected to the protocol chip.

[0016] In one embodiment, the prompt module includes any one or a combination of an LED lamp, a buzzer and a display connected to the protocol chip.

[0017] The second aspect of the utility model provides a docking station, which comprises the docking station protection device of any one of the above embodiments.

[0018] The utility model has at least the following beneficial effects:

[0019] The docking station protection device serves as a bridge for the transmission of electric energy between the docking station and an external power supply device, can detect the power supply input of the power supply device through the detection circuit, detect whether the docking station is short-circuited, disconnect the docking station from the external power supply device based on the disconnection of the switch circuit when the docking station is short-circuited, and thus realize short-circuit protection of the docking station and ensure the safety of the docking station.

[0020] Further, the protocol chip of the docking station protection device can also be communicatively connected to the circuit chip of the docking station, so that when the docking station is in a short circuit condition and the communication between the circuit chip and the protocol chip is interrupted, the protocol chip can control the switching circuit to be quickly disconnected, thereby cutting off the connection between the power supply device and the docking station, and timely protecting the docking station from short circuit. Thus, on the basis of the detection protection mechanism, a communication protection mechanism is further added, so that the docking station has double insurance, and the use safety is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0022] Figure 1 A structural schematic diagram of the docking station protection device provided by the present application is shown in the figure.

[0023] Figure 2 A circuit structural schematic diagram of the docking station protection device provided by the present application is shown in the figure.

[0024] Figure 3 A structural connection schematic diagram of the docking station protection device in actual work is shown in the figure.

[0025] Figure 4 A structural connection schematic diagram of an embodiment of the docking station protection device in actual work is shown in the figure.

[0026] Reference signs:

[0027] 1-protocol chip; 2-detection circuit; 21-detection resistor; 3-switching circuit; 31-first MOS tube; 32-second MOS tube; 4-power supply device; 5-docking station; 51-circuit chip; 6-power supply circuit. DETAILED DESCRIPTION

[0028] In the following, various embodiments of the present application will be described more fully. The present application can have various embodiments, and adjustments and changes can be made therein. However, it should be understood that there is no intention to limit various embodiments of the present application to the specific embodiments disclosed herein, but the present application should be understood to cover all adjustments, equivalents and / or alternatives falling within the spirit and scope of various embodiments of the present application.

[0029] Hereinafter, the term "include" or "may include" used in various embodiments of the present application indicates the presence of the disclosed functions, operations, or elements and does not limit one or more functions, operations, or elements from being added. Also, as used in various embodiments of the present application, the terms "include", "have", and their conjugates merely indicate the presence of the mentioned features, numbers, steps, operations, elements, components, or combinations thereof, and do not exclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations thereof.

[0030] In various embodiments of the present application, the expression "or" or "at least one of A or / and B" includes any combination of the listed terms or all combinations thereof. For example, the expression "A or B" or "at least one of A or / and B" can include A, can include B, or can include both A and B.

[0031] The expressions (such as "first", "second", etc.) used in various embodiments of the present application can modify various constituent elements in various embodiments, but can not limit the corresponding constituent elements. For example, the above expressions do not limit the order and / or importance of the elements. The above expressions are used only for the purpose of distinguishing one element from other elements. For example, the first user device and the second user device indicate different user devices, although both are user devices. For example, the first element can be referred to as the second element, and likewise, the second element can be referred to as the first element without departing from the scope of various embodiments of the present application.

[0032] It should be noted that in the present application, unless otherwise explicitly specified and defined, the terms "mounting", "connection", "fixing", etc. should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be direct connection, or can be indirectly connected through an intermediate medium; can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] The existing docking station lacks the structural design of short circuit protection, and still maintains the power supply working state after the short circuit occurs, which will cause the docking station to burn out for a long time, and the use safety is poor. Based on this, the utility model provides a docking station protection device and a docking station, wherein the docking station protection device is a bridge for power transmission between the docking station and the external power supply equipment, can detect the power supply input of the power supply equipment, thereby judging whether the docking station has a short circuit, when the docking station has a short circuit, the switch circuit can be quickly disconnected, the connection between the power supply equipment and the docking station is disconnected, the short circuit protection of the docking station is realized, and the use safety of the docking station is ensured. The specific implementation of the present scheme will be described in detail.

[0034] Please refer to Figure 1 The utility model provides a kind of docking station protection device, for carrying out short circuit protection to docking station, comprising: protocol chip 1 and power supply circuit 6.

[0035] Specifically, please refer to Figure 3 Protocol chip 1 is communicated and connected with external power supply equipment 4, and power supply equipment 4 is connected with docking station 5 by power supply circuit 6 to supply power for docking station 5.

[0036] Exemplarily, when protocol chip 1 is communicated and connected with power supply equipment 4, signal can be sent to power supply equipment 4 to request maximum voltage output, so that power supply equipment 4 transmits power to docking station 5 with maximum voltage, thereby ensuring that docking station 5 can work normally, and docking station 5 can meet the access demand of multiple external equipment simultaneously.

[0037] Exemplarily, please refer to Figure 2 Protocol chip U2 can be communicated and connected with power supply equipment by CC1 and / or CC2, so as to communicate by protocol.

[0038] Power supply circuit 6 includes detection circuit 2 and switch circuit 3, and protocol chip 1 is connected with detection circuit 2 and switch circuit 3 respectively, for detecting the power supply input of power supply equipment 4 by detection circuit 2, and for controlling the on-off of power supply circuit 6 by controlling the on-off of switch circuit 3.

[0039] Optionally, detection circuit 2 and switch circuit 3 can be directly connected, or indirectly connected through other components or circuits. In power supply circuit 6, the setting order of detection circuit 2 and switch circuit 3 is not limited, and power supply equipment 4 can be connected with docking station 5 through detection circuit 2 and switch circuit 3 in turn, or connected with docking station 5 through switch circuit 3 and detection circuit 2 in turn.

[0040] Optionally, the detection of the power supply input of power supply equipment 4 by detection circuit 2 can be the detection of current or voltage of the power supply input of power supply equipment 4.

[0041] With the detection of the current as an example, it can be understood that when the docking station 5 is short-circuited, the current input by the power supply device 4 increases, and when it is detected that the current is greater than the first preset short-circuit threshold, it is determined that the docking station 5 is short-circuited. At this time, the protocol chip 1 controls the switch circuit 3 to be disconnected, thereby disconnecting the power supply circuit 6, so that the docking station 5 stops working in time, and the short-circuit protection of the docking station 5 is realized.

[0042] Similarly, when the docking station 5 is short-circuited, the input voltage of the power supply device 4 decreases, and when the protocol chip 1 detects through the detection circuit 2 that the input voltage of the power supply device 4 is less than the second preset short-circuit threshold, it is determined that the docking station 5 is short-circuited. At this time, the protocol chip 1 controls the switch circuit 3 to be disconnected, thereby disconnecting the power supply circuit 6, so that the docking station 5 stops working in time, and the short-circuit protection of the docking station 5 is realized.

[0043] Each of the following embodiments is described with the detection of the current.

[0044] In a specific embodiment, please refer to Figure 3 The protocol chip 1 is also communicatively connected to the circuit chip 51 of the docking station 5. Specifically, the protocol chip 1 can be configured to control the switch circuit 3 to be disconnected when the communication with the circuit chip 51 is interrupted.

[0045] It can be understood that when the docking station 5 is normally working, the protocol chip 1 and the circuit chip 51 normally communicate and can obtain state information from each other. When the docking station 5 is short-circuited, the circuit chip 51 of the docking station 5 cannot normally work, and the communication signals between the circuit chip 51 and the protocol chip 1 will be lost or abnormal, resulting in the interruption of the communication between the two. Based on this situation, the protocol chip 1 can attempt to reestablish the communication with the circuit chip 51, and if the communication fails for multiple times, the protocol chip 1 controls the switch circuit 3 to be disconnected, thereby disconnecting the power supply circuit 6, so as to protect the docking station 5 from short-circuit in time; or when the communication between the two is interrupted, the protocol chip 1 detects the current input by the power supply device 4 through the detection circuit 2, and if the current is greater than the first preset short-circuit threshold, the power supply circuit 6 is also disconnected in time, so as to protect the docking station 5 from short-circuit. Thus, this embodiment further increases a communication protection mechanism on the basis of the detection protection mechanism, so that the docking station 5 has double insurance, and the safety is further improved.

[0046] Exemplarily, please refer to Figure 2 The protocol chip U2 can communicate with the circuit chip 51 of the docking station 5 through SDA1 and SCL. The circuit chip 51 of the docking station 5 is exemplarily a DC-DC circuit chip.

[0047] In one specific embodiment, a detection resistor 21 is arranged in the detection circuit 2, and the protocol chip 1 is connected to the detection resistor 21, for detecting the current size of the power input of the power supply device 4 through the detection resistor 21.

[0048] Optionally, the number and resistance value of the detection resistor are not limited, and can be adaptively set according to actual conditions.

[0049] For example, referring to Figure 2 , the detection resistor can include a detection resistor R5, and the pin CSPH and the pin CSNH of the protocol chip U2 are respectively connected to two ends of the detection resistor R5, so as to detect the voltage across the detection resistor R5, and thus the current size through the detection resistor R5 is detected based on Ohm's law, and the current size input by the power supply device 4 is obtained.

[0050] In this embodiment, the first preset short-circuit threshold can be more than one times of the rated current size of the detection resistor R5, for example, can be 2 times. It should be noted that the "rated current size of the detection resistor R5" is the current size flowing through the detection resistor R5 in the normal working state of the docking station 5. Taking the first preset short-circuit threshold as 2 times of the rated current size of the detection resistor R5 as an example, if the current size flowing through the detection resistor R5 in the normal working state is x amperes, when the current size is greater than 2x amperes, it is judged that the docking station 5 is short-circuited, and at this time, the protocol chip 1 controls the switch circuit 3 to be disconnected, so as to disconnect the power supply circuit 6.

[0051] In one specific embodiment, at least one switch can be arranged in the switch circuit 3, and the protocol chip 1 is connected to the switch, for controlling the on-off of the switch, so as to control the on-off of the power supply circuit 6.

[0052] Specifically, when the docking station 5 is normally working, the switch is turned on, and the power supply circuit 6 is turned on, so that the power supply device 4 is connected with the docking station 5, and the electric energy can be transmitted to the docking station 5; when the docking station 5 is short-circuited, the switch is turned off, and the power supply circuit 6 is turned off, so that the connection between the power supply device 4 and the docking station 5 is disconnected, and the electric energy cannot be transmitted to the docking station 5, thereby realizing the short-circuit protection of the docking station 5.

[0053] For example, referring to Figure 2 and Figure 4 , the switch can include a first MOS tube Q2 (i.e. the mark 31 in Figure 4 ) and a second MOS tube Q3 (i.e. the mark 32 in Figure 4 ) connected in series, and the protocol chip U2 is connected to the first MOS tube Q2 and the second MOS tube Q3 respectively, for controlling the on-off of the first MOS tube Q2 and the second MOS tube Q3.

[0054] Specifically, the protocol chip U2 is connected to the gate of the first MOS Q2 and the gate of the second MOS Q3 respectively, when the current detected by the detection circuit 2 is greater than the first preset short-circuit threshold or the communication between the protocol chip and the circuit chip is interrupted, the protocol chip U2 outputs a level to the first MOS Q2 and the second MOS Q3, so that the two are turned off, and the power supply circuit 6 is disconnected, realizing the short-circuit protection of the docking station 5.

[0055] In one embodiment, the power supply circuit 6 is used to electrically connect the power supply device 4 through the external interface. Figure 2 In the embodiment, the external interface is specifically CONN1.

[0056] Further, the protocol chip 1 is used to communicate with the power supply device 4 through the external interface.

[0057] In one embodiment, the prompting module is further used to prompt the state of the docking station 5, and the prompting module is connected to the protocol chip 1.

[0058] Optionally, the prompting module can include any one or combination of LED, buzzer and display connected to the protocol chip 1.

[0059] For example, the prompting module can include one or more LED lamps connected to the protocol chip 1, which can be configured to be green all the time when the docking station 5 is working normally, and red all the time or flashing when the protocol chip 1 detects that the docking station 5 is short-circuited. The above is only one configuration, and the specific configuration can be adaptively designed according to the actual situation. Figure 2 In the embodiment, the LED lamp is specifically LED8.

[0060] In other embodiments, the prompting module can also include a buzzer and / or a display to prompt the short-circuit of the docking station 5 in the form of sound and visualization.

[0061] The utility model also provides a docking station including the docking station protection device of any one embodiment described above.

[0062] For example, please refer to Figure 3 The docking station 5 is used to be connected to the external power supply device 4 through the power supply circuit 6 to accept the power of the external power supply device 4, so as to work normally.

[0063] When the docking station 5 is short-circuited, the switching circuit 3 of the docking station protection device disconnects the connection between the docking station 5 and the power supply device 4, and the docking station 5 can be protected from short-circuit.

[0064] Further, the docking station 5 can be provided with a circuit chip 51, which can be a DC-DC circuit chip for example. The circuit chip 51 is communicatively connected to the protocol chip 1 of the docking station protection device, so that when the docking station 5 is short-circuited and the communication between the circuit chip 51 and the protocol chip 1 is interrupted, the protocol chip 1 can detect that the docking station 5 is short-circuited, and disconnect the docking station 5 from the power supply device 4 by controlling the switch circuit 3 to be disconnected, so as to protect the docking station 5 from short-circuit.

[0065] In summary, the docking station protection device and the docking station can detect whether the docking station is short-circuited by detecting the power supply input of the power supply device, and disconnect the docking station from the power supply device when the docking station is short-circuited, so as to protect the docking station from short-circuit and ensure the safety of the docking station.

[0066] Further, the protocol chip of the docking station protection device can also be communicatively connected to the circuit chip of the docking station, so that when the docking station is short-circuited and the communication between the circuit chip and the protocol chip is interrupted, the protocol chip can control the switch circuit to be disconnected quickly, so as to disconnect the docking station from the power supply device and protect the docking station from short-circuit in time. Thus, on the basis of the detection and protection mechanism, a communication protection mechanism is further added, so that the docking station has double insurance and the safety is further improved.

[0067] Those skilled in the art can understand that the drawings are only schematic diagrams of a preferred embodiment, and the modules or processes in the drawings are not necessarily necessary for implementing the utility model.

[0068] Those skilled in the art can understand that the modules in the device in the embodiment can be distributed in the device in the embodiment according to the description of the embodiment, or can be changed and located in one or more devices different from the embodiment. The modules in the above embodiment can be combined into one module, or can be further split into multiple sub-modules.

[0069] The above-mentioned serial number of the utility model is only for description, and does not represent the advantages and disadvantages of the embodiment.

[0070] The above-mentioned serial number of the utility model is only for description, and does not represent the advantages and disadvantages of the embodiment. The above-mentioned serial number of the utility model is only for description, and does not represent the advantages and disadvantages of the embodiment. The above-mentioned serial number of the utility model is only for description, and does not represent the advantages and disadvantages of the embodiment.

Claims

1. A docking station protection device, comprising: The application relates to a short-circuit protection device for a docking station, comprising a protocol chip and a power supply circuit. The protocol chip is communicatively connected to an external power supply device, and the power supply device is connected to the docking station through the power supply circuit. The power supply circuit comprises a detection circuit and a switch circuit, and the protocol chip is connected to the detection circuit and the switch circuit respectively, so as to detect the power input of the power supply device through the detection circuit and control the on-off of the power supply circuit by controlling the on-off of the switch circuit.

2. The docking station protection device of claim 1, wherein, The protocol chip is also communicatively connected to a circuit chip of the docking station.

3. The docking station protection device of claim 1, wherein, The detection circuit is provided with a detection resistor, and the protocol chip is connected to the detection resistor to detect the current of the power input of the power supply device through the detection resistor.

4. The docking station protection device of claim 1, wherein, The switch circuit is provided with at least one switch, and the protocol chip is connected to the switch to control the on-off of the switch.

5. The docking station protection device of claim 4, wherein, The switch comprises a first MOS tube and a second MOS tube connected in series, and the protocol chip is connected to the first MOS tube and the second MOS tube respectively to control the on-off of the first MOS tube and the second MOS tube.

6. The docking station protection device of claim 1, wherein, The power supply circuit is used for electrically connecting the power supply device through an external interface.

7. The docking station protection device of claim 6, wherein, The protocol chip is used for communicatively connecting the power supply device through the external interface.

8. The docking station protection device of claim 1, wherein, The application also comprises a prompt module used for prompting the state of the docking station, and the prompt module is connected to the protocol chip.

9. The docking station protection device of claim 8, wherein, The prompt module comprises any one or combination of an LED lamp, a buzzer and a display connected to the protocol chip.

10. A docking station, characterized by The application also comprises the docking station protection device according to any one of claims 1-9.

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